Applicability of particle and heavy ion transport code PHITS to the shielding design of spacecrafts

Sato, Tatsuhiko   ; Niita, Koji*; Iwase, Hiroshi*; Nakashima, Hiroshi; Yamaguchi, Yasuhiro; Sihver, L.*

The applicability of PHITS to the shielding design of spacecrafts was examined by comparing calculated neutron spectra and doses for astronauts in the Space Shuttle with the corresponding experimental data. The agreements between the data were quite satisfactory, especially for the neutron spectra, which have been barely reproduced by other studies. We therefore concluded that PHITS has a great possibility of playing an important role in the design study of spacecrafts.